51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
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/* Copyright (C) 1992-2001 by Digital Mars. $Revision: 1.1.1.1 $ */
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#if __SC__ || __RCC__
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#pragma once
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#endif
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#ifndef __PAGE_H
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#define __PAGE_H 1
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#if __cplusplus
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extern "C" {
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#endif
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#if __INTSIZE == 4
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#define __BF
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#else
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#define __BF far
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#endif
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#define __PGOFF sizeof(unsigned short)
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#pragma pack(1)
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struct Pageheader
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{
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unsigned short pagesize;
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unsigned short maxsize;
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unsigned short allocp;
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unsigned short bassize;
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unsigned short baslnk;
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};
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#pragma pack()
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#define PAGEOVERHEAD sizeof(struct Pageheader)
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unsigned __cdecl page_calloc(void __BF *baseptr,unsigned size);
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unsigned __cdecl page_malloc(void __BF *baseptr,unsigned size);
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unsigned __cdecl page_realloc(void __BF *baseptr,unsigned p, unsigned nbytes);
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int __cdecl page_free(void __BF *baseptr,unsigned p);
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unsigned __cdecl page_maxfree(void __BF *baseptr);
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unsigned __cdecl page_initialize(void __BF *baseptr,unsigned pagesize);
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#define page_size(baseptr,p) \
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(*(unsigned short __BF *)((char __BF *)(baseptr) + (p) - __PGOFF) - __PGOFF)
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#define page_toptr(baseptr,p) (void __BF *)((char __BF *)(baseptr) + (p))
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#if __cplusplus
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}
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#endif
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#endif
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